I have four dogs; a St.Bernard, Bernese Mt. Dog, Boxer, and a Yorkie. They all live in the house with us, making even the largest house seem small! The Berner, Boxer, & Yorkie are all working obedience dogs. The Saint was a breed prospect that didn't pan out -- but he's a wonderful pet, and we couldn't give him up. Of the dogs, the Yorkie calls the shots, and makes all the "doggie" type decisions.